Multiple socket for incandescent lamps.



N0.s5s,2a1. PATENTED MAY 14, 1907. E. L. ELLIOTT.

MULTIPLE SOCKET FOR INGANDESGENT LAMPS APPLICATION FILED MAY 1 a, 1906.

Wanda? 6 9. fizver'uti'a 71f erases Ph'iihlhii ELi s L. ELLIOTT, or NEW roan. N. Y.

, Specification of Letters Patent.

zatented May 14:, 1907.

Application filed May 18, 1906. Serial No- 317,509.

To all whont it may concern:

Be it known that i, ELIAS L.-ELL10TT, a

.citizenof the United States, residing at in which like letters refer to like parts.

My device consists of a multiple holder or socket for receiving a number of incandest electric lamps, and is so constructed that by a single connection of the leading-in wires to the binding posts, electrical COHDGC- tion is made to each of the lamps when in serted in the socket.

it consists essentially of two main parts, namely: a base by which it is attached to the supporting fixture, and which contains one contact piece, or set of contact pieces, for making connection with the lamp, and a body, which directly supports the lamps and contains the other contact piece, or set of contact ")pieces for completing the electric circuit.

' In the accompanying drawings, Figure l is across section through the multiple holder. in a plane vertical to its normal position; Fig. 2,

is 'a-plan view of the base from below, the

body portion being removed; and Fig. 3 is a top plan View of the body portion showing the interior.

The base 1, is constructed oi insulating material, preferably porcelain, having a flange or projection 2, adapted to receive the metallic contact piece 4, and provided with a central aperture 16, to receive the supply Wires 6, 7. I

I have shown the contact piece 4:, in the iorin ol an inverted truncated cone stamped up from a single sheet of metal, although it may be made in any convenient shape. It is provided with a central opening 5, for one of the leads 6 and is secured to the base by means of the bolt 15, whichalso constitutes the binding post by which the lead 6 is con- I i I a nected thereto. Encn'cling the flange 2, 1s a metal collar having a depending threaded portion 11 and a flat horizontal portion 17, secured by means of bolts 14, to the base, one of the bolts 14, serving as a binding post to connect the collar with the lead '7, the latter passing. through a channe 13, in the flange 2 of the base.

The body 3, is preferably constructed oi porcelain, or other insulating 1naterial,and is provided with openings 8, to receive the threaded thimbles or shells 9, which constitute sockets for the reception oi the lamp bases. Extending around the inner circum .ierence of the body is a metal ring 10, with which the shells or sockets 9, make electrical connection. The shells may be fastened to the ring in some substantial manner, as by riveting or soldering, thus securing the ring rigidly to the body. it is evident, however, that the ring may be secured to the body in some other manner, and merely contact with the sockets.

As a means of attaching the body portion to the base, 1 preferably thread the ringlO, to correspond with the threads on the collar 11, so that the parts may beunited by simply screwing the body on to the base.

In installing the multiple socket, the base 8 5 may be attached directly to a wooden support by screws 12 passing through holes provided for this purpose. In case it is desired to fasten the socket to a metal support, these screws can engage a, metal cover having the necessary means of attachment; One of the leading-in wires 7, is then brought through the channel 13, in the flange and attached to the binding post 14', in connection with the collar 11. The other lead 6, is now passed through the hole 5, in the bottom of the contact piece i, and clamped by the nut on the bolt 15, which at the same time fastens the contact piece to the base. The body is then screwed on to the base, the threaded ring and collar holding the parts securely together. The lamps may now be screwed into the sockets until their inner contacts engage the contact piece 4. i In the present case I have shown the multiple socket arranged to con- .nect the lamps in parallcl,-the inner lamp I contacts connecting with the central-contact piece 4L, and the outer or threaded contacts,

-connecting with the collar 11 through the ring 10, but I may divide the contact pieces I I0 into segments for the purpose ol connecting the lamps in series aud I desire it to be unrying a contact piece, for making electrical connection with each lamp, and an insulating body detachably secured to the base and arranged to support the lamps in position and carrying a metallic contact piece for completing the electrical circuit witheach lamp; substantially as described.

2. A multiple socket for incandescent electric lampsc'omprising an insulating base carrying a contact piece for making electrical connection with each lamp, and an insulating body provided'with a plurality of lamp-holding devices, said devices carrying means for detachably securin thebase and body together; substantial y as described.

3. A multiple socket for incandescent elec tric lamps comprising an insulating base carrying a contact piece for making electrical connection with each lamp, and an insulatin detachably securing the base and'body together, and for completin the electrica circuit with each lamp; su stantially as described.

4. A multiple socket for incandescent elec'- tric lamps comprising an insulating base provided with contacts for connection with the supply leads, aninsulating body arranged to. sup ort the lamp in osition, and means detac ably securing the ase and-body together,

said means bringing the lamps into electrical connection with the supply leads; substan-'.

tially as described.

5. A multiple socket for incandescent electric lamps comprising an insulating base provided with contacts for connection with the supply leads, and an insulating body arranged to support the lamps in position, and provided with means for detachably securing the base and body'together and for completing the electrical circuit with each lamp; substantially as described.

6. A multiple socket for incandescent electric lamps comprisin an insulating base provided with contacts or connection with supbody provided with a plurality of lamp hol mg devices, said devices carrying means for 1y leads, and an insulating body carrying l amp-holding devices and means for simultaneously securing the base and body together and connecting said devices with one of said leads; substantially as described.

7. A multiple holder for electric lamps comprising an insulating base portion pro vided with means for connecting with supply wires, and an insulating body portion constituting a casing for said holder and adapted to support andinsulate a plurality of ampreceiving shells; substantially as described.

8. .A multiple holder for electric lamps comprising an insulating base portion provided with means for connecting with supply wires, and an insulatingbody portion adapted .to support and insulate, a plurality of lam receiving shells, and means for electrical y connecting said shells with one of the supply wires when the parts are assembled; substantially as. described.

9. A multiple holder for incandescent the body to the base and connecting each" lamp with the supply wires; substantially as described.v

10. In a multiple holderfor electric lamps, the combination of an insulating base, a metallic contact piece attached thereto forming lamps comprising an insulating base, a me i one part of the electric circuit,a flanged collar having a depending sciew'threaded portion and forming a part of the electric circuit, an insulating body having openings, threaded shells adapted to receive the lampbases in said openings, and a threaded rin jsecured to said body, electrically connected Withsaid shells and adapted to engage said threaded collar substantially as described.

11.. In amultiple holder for electric lamps, the combination of aninsulating base provided with a central depending flange, a me tallic contact piece secured to said flange, a depending threaded metallic collar secured tothe base, an insulating body having openings for lamp sockets, and a-threaded ring secured to said body and arranged to connect with the sockets and to engage said threaded collar; substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

' ELIAS L. ELLIOTT.

Witnesses:

E. A. STaUNK, E. P. RAY. 

